To control the water level of the Bypass Floodway and to prevent water downstream from flowing back into the channel, a system of dry weather flow pumping station and inflatable dam is built at the downstream end of Yuen Long Bypass Floodway. At times of heavy rainfall, the dam will automatically deflate and lower to allow flood water upstream to flow into Kam Tin River to mitigate flood risks.

To control the water level of the Bypass Floodway and to prevent water downstream from flowing back into the channel, a system of dry weather flow pumping station and inflatable dam is built at the downstream end of Yuen Long Bypass Floodway. At times of heavy rainfall, the dam will automatically deflate and lower to allow flood water upstream to flow into Kam Tin River to mitigate flood risks.

To control the water level of the Bypass Floodway and to prevent water downstream from flowing back into the channel, a system of dry weather flow pumping station and inflatable dam is built at the downstream end of Yuen Long Bypass Floodway. At times of heavy rainfall, the dam will automatically deflate and lower to allow flood water upstream to flow into Kam Tin River to mitigate flood risks.